Richabd m



(No Model.)

R. M. OOSBY.

GAR TRUCK.

N. Prrcns Pima mwmpw. washington. n

UNrraD STATES PATENT Ormea.,

RICHARD M. COSBY, OF INDIANAPOLIS, INDIANA.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 251,352, dated December27, 1881.

Application filed August 6, 1881.

To all whom it may concern:

Be it known that I, RICHARDM. UosBY, ofthe city of Indianapolis, countyof Marion, and State of Indiana, have invented certain new and usefulImprovements in Car-Trucks, of which the folowing is a specification.

rlhe object of my said invention is to produce a car-truck, principallyfor passengercoaches, which shall carry its load evenlyand steadilywithout reference to the roughness ot the track. This is accomplished byconstructing the truck so that any jar occasioned by the passage of anywheel thereof over any irregularity in the track shall be received byequalizing trusses and distributed throughout the whole structure. Theconstruction shown notonly accomplishes this purpose, but securesseveral other important advantages, which will hereinafter be fullydescribed.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters ot reference indicate similar parts, Figurel is a perspective view ot a cartruck embodying my invention; Fig. 2, atop or plan view thereof; Fig. 3, a longitudinal vertical section,looking upwardly from the dotted line c e,- Fig. 4, a transversevertical section,looking to the left from the dotted line yw fw; Fig. 5,a detail drawing, looking` downwardly from the dotted line y y; Fig. 6,a verticalsection, looking` upwardly from the dotted line xm,- and Fig.7, a vertical section on the line .e z, Fig. 2.

In said drawings, the portions marked A represent the car-wheels; B, theaxles; C, the boxes; D, the side trusses; E, inner or equalizingtrusses; F, springs interposed between the trusses D and E; G, diagonaltrusses, the ends of which rest ou the trusses E; H, bars running acrossthe tops ofthe bars composing the trusses G,and restingthereon; I, stayrods or bars running from thepartsGHto the axle; J, frames secured uponthe trusses Gand supported thereby; K, stirrups suspended thereto L, thecross-bars of said stirrups; M, the bottom bar of the bolster; N,springs on said bar; O, a second bar, similar to the bar M, resting onsaid springs; and P, the top portion of the bolster upon which the carrests.

The wheels A, axles B, and boxes C are (No model.)

`passing down through or beside said boxes.

Four frames-two, DD, at the ends, and two, D2 D2, near the center-bindthese trusses together, and also serve as guides t'or the inner trusses,E, and the end ones, in addition, also serve as guides for the diagonaltrusses G. The frames D D each contain a flanged pin, d', located abovethe ends ofthe trusses G G, by which said trusses and the trusses E Eare prevented from having too great an upward movement. The angesthereon are of different lengths, so that by turning one or another downagainst the trusses they are held more or less tightly in place, as maybe required.

rIhe inner or equalizing trusses E are supported in the center by thesprings F F, which, as well as the trusses themselves, pass between theguides D2 D2, and are held in position thereby. These trusses, beingfree at the ends to move vertically, except so far as they are'Vgoverned by the flanged pinsd, and being supported wholly by thesprings in the center, are relieved largely of the jar of the wheels, asthey pass over'rough orirregular places in the track, which wouldotherwise be communicated to them.

The diagonal irussesGGare secured at their ends to the ends ot' thetrusses E E, and there` fore move therewith. They, like said trusses EE, enter the frames D D at their ends, and are secured together in thecenter by the bolts or rivets g. They are secured to the bars H andstays I by the long bolts G, which also secure the top and bottommembers of said trusses in unvarying relation.

The bars H are simply straight bars conneetin g the trusses G togetherand serving as supports for the frame J, which rests thereon.

The staybars or rods I are made in the form of braces, as shown, and areconnected to the trusses G at one end and at the other to the axles.Ordinarily they serve no special purpose; butin case of the breaking oftof a wheel from the axle they would serve to hold up the end of the axlefrom the ground and prevent it from catching among the cross-ties, or onother obstructions, and thus throwing the whole truck from the rails andcausing a smash-up.7

The frames J rest upon the bars H. They preferably are of the formshown, coming to a point at or near their ends, so that the stirrups Kcan be pivoted thereto at that point and swing free for the rest oftheir length.

The stirrups K are pivoted to the frames J by pivots j, on which theyswing at right angles with the direction in which the truck moves.

The cross-bars L are supported by pairs of the stirrups K, and supportthe bottom bar, M, of the bolster, to which they, as well as bars n, aresecured by bolts m, as shown in Fig. 6.

The bars M and Oare usuallyheavy wooden timbers, and havespringsNinterposed between them, which are secured thereto, as shown.

rI he top portion, P, ofthe bolster is in the form of a he'avy flatspring, the looped ends of which rest upon and are secured to the bar O,and also preferably pass around the top memv ber ofthe side truss, D.The car is secured to this portion in the usual manner.

As will be readily seen by this detailed explanation, each part of theframe of this cartruck aids in the general design of having as little ofthe jarring motion of the wheels as they pass over irregularities in thetrack im; parted to the car as is possible. The springs F and N providefor the vertical movement required, the stirrups K for the lateral,while, when necessary, a slight longitudinal movement is permitted bythe manner in which the inner trusses are connected to the outer ones,which movement, however, is prevented from becoming too great by thelstops e e, which may 'in themselves be somewhat elastic.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination, in a car-truck, with the outer truss, D, of an innerequalizing truss, E, supported centrally by springs, and the ends ofwhich move vertically independently of said outer truss, substantiallyas shown and specified.

2. The combination, with the outer trusses of a car-truck, which restupon bearings upon the ends of the axles outside the wheels, of

trusses G Gr, each of which extends directly from one corner of thetruclrto the corner diagonally opposite, and the ends of which are bentaround to rest upon the outer trusses, all substantially as shown andspecified.

3. The combination, with theinternal trusses of a car-truck, of thesubstantially elliptical frames J J, having the hangers K K, attachedthereto by pivots j, which, by means of the bars L L, support thebolster and permit it to have a swinging movement, all substantially asshown and described, and for the purposes specified. Y

4. The combination of the bars M and O, springs N, and top portion, P,forming a bolster, all arranged and operating substantially as shown'and set forth.

5. The combination, in a car-truck, of the trusses D, which rest on theboxes, the trusses E, which rest on springs upon said truss D, andtrusses Gr, which rest upon said trusses E and run diagonally across thetruck from one t0 the other of said trusses E, substantially as shownand specified.

6. The combination, with the trusses D, of frames D D2, which secure thetop and bottom members of said trusses together, and also serve toretain other trusses inside these trusses in position, substantially asshown and specified.

7. The combination, with the inside trusses, E, of the flanged pins d',which adjustably secure said trusses against too great an upwardmovement, substantially as shown and described.

8. The combination of the side trusses, D E, one within the other, thediagonal trusses G, the hanger-frames J, resting thereon, the han gersK, pivoted thereto, and the bolster resting upon bars connecting pairsof said hangers, all substantially as set forth.

9. The combination, with the trusses of a car-truck, of the stay-rods I,by which, in case of an accident, the axle would be prevented fromfalling to the ground, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

RICHARD M. 'GOSBY.

Witnesses:

GEORGE H. BENNETT, E. O. FRINK,

IOO

